RPM's?

I just got my smart car a few days ago (bought it used). But I am noticing that when I am sitting still (like at a stop light) my RPM's are at 1. To me it seems that it is idling high. Is this normal or is this something that needs to be looked at. Shouldn't it be a little over 0? Just asking because I don't have a lot of experience with the car yet.